Santiago Metro joins Chilean capital’s recent energy efforts

The measures implemented since March by the city’s underground railway system will save an equivalent of 11,350 homes’ worth of energy.


Santiago’s Metro has announced a new energy efficiency plan which aims to reduce electrical consumption by 5% – equivalent to 11,350 average households.

The voluntary effort, one of many recent initiatives in the Chilean capital, will provide automatic lighting control in shops, stations and buildings, which will reduce voltage by 20 KW. Along with this, speed controls will be introduced to maximize energy efficiency at off-peak times.

Additionally, the Metro – which has 108 stations and more than 100 kilometers of track – has set its billboards to shutdown when not in use and to only light up during Metro opening hours.

All back-lighting on advertising media will use energy efficient technology, both inside and outside the stations. This reduces consumption by approximately 73% more than that of a traditional panel.

Pilot Project

Santiago’s subway station Unión Latinoamericana developed a pilot project last year that reduced energy consumption 33% by using an intelligent lighting system.

In addition to reducing the daily energy usage from 300 to 200 KWH, the project showed positive results in terms of quality of light, obtaining a more uniform brightness and greater intensity. Light on platforms increased from 111 to 226 lux, also key to the safety of subway passengers.

Currently 18% of electricity consumption in Metro stations is due to lighting and power, including lighting systems, escalators and elevators, among others.

These measures add to the permanent policy that Santiago’s Metro has adopted in recent years.

The Metro has also invested in new trains and more energy efficient innovations such as a transport scheduling supply system, software development, electrical power management and the reuse of energy generated during train braking.